System change, class war, and the WW2 economic conversion experience

The climate crisis has driven our planet into uncharted territory. We are close to breaching critical environmental thresholds, setting in motion destabilizing changes to our global climate system that could well make the earth unlivable for humans and countless other species.  We must decrease carbon emissions as rapidly as possible and there is no way to do that without significantly changing the operation and aims of our economy.  But not just any change will do.  It must be one that also promotes worker empowerment and solidarity, community well-being and security, and democracy.